| 摘要 |
PURPOSE:To eliminate such trouble that a fire shutter is closed completely by moving an unmanned vehicle straight forcibly on the basis of a signal from a transmitter when the unmanned vehicle is in a forcible passing zone during the closure of the fire shutter. CONSTITUTION:If a smoke sensor 9 operates while the unmanned vehicle 1 runs in the forcible passing zone 6, a receiver 15 receives a forcible passing signal 14 from the ratio transmitter 12 simultaneously with the closure of the fire shutter 4 and a program switching means 22 then operates to switch on electromagnetic guide control program 21 to a forcible straight advance control program 23. Therefore, the unmanned vehicle 1 moves straight in the zone 5 as it is even when an electric wire 2 for electromagnetic guide is powered off. The straight movement of the unmanned vehicle 1 by this program 23 is stopped automatically when the unmanned vehicle 1 passes through the zone 5 and a reed switch 17 for forcible passing zone detection is turned on with a permanent magnet 19. |
